feat(keys): 适配 Antigravity 和 Gemini 平台的使用教程与 CCS 导入

- UseKeyModal: 添加 Antigravity 两级 Tab (Claude Code / Gemini CLI)
- UseKeyModal: 添加 Gemini 平台的 Gemini CLI 教程
- UseKeyModal: Antigravity 平台统一使用 /antigravity 后缀
- KeysView: CCS 导入支持 Antigravity (询问客户端) / Gemini / OpenAI
- i18n: 添加相关中英文翻译

frontend/src/i18n/locales/en.ts

@@ -321,6 +321,18 @@ export default {
         note: 'Make sure the config directory exists. macOS/Linux users can run mkdir -p ~/.codex to create it.',
         noteWindows: 'Press Win+R and enter %userprofile%\\.codex to open the config directory. Create it manually if it does not exist.',
       },
+      antigravity: {
+        description: 'Configure API access for Antigravity group. Select the configuration method based on your client.',
+        claudeCode: 'Claude Code',
+        geminiCli: 'Gemini CLI',
+        claudeNote: 'These environment variables will be active in the current terminal session. For permanent configuration, add them to ~/.bashrc, ~/.zshrc, or the appropriate configuration file.',
+        geminiNote: 'These environment variables will be active in the current terminal session. For permanent configuration, add them to ~/.bashrc, ~/.zshrc, or the appropriate configuration file.',
+      },
+      gemini: {
+        description: 'Add the following environment variables to your terminal profile or run directly in terminal to configure Gemini CLI access.',
+        modelComment: 'If you have Gemini 3 access, you can use: gemini-3-pro-preview',
+        note: 'These environment variables will be active in the current terminal session. For permanent configuration, add them to ~/.bashrc, ~/.zshrc, or the appropriate configuration file.',
+      },
     },
     customKeyLabel: 'Custom Key',
     customKeyPlaceholder: 'Enter your custom key (min 16 chars)',
@@ -328,7 +340,15 @@ export default {
     customKeyTooShort: 'Custom key must be at least 16 characters',
     customKeyInvalidChars: 'Custom key can only contain letters, numbers, underscores, and hyphens',
     customKeyRequired: 'Please enter a custom key',
-    ccSwitchNotInstalled: 'CC-Switch is not installed or the protocol handler is not registered. Please install CC-Switch first or manually copy the API key.'
+    ccSwitchNotInstalled: 'CC-Switch is not installed or the protocol handler is not registered. Please install CC-Switch first or manually copy the API key.',
+    ccsClientSelect: {
+      title: 'Select Client',
+      description: 'Please select the client type to import to CC-Switch:',
+      claudeCode: 'Claude Code',
+      claudeCodeDesc: 'Import as Claude Code configuration',
+      geminiCli: 'Gemini CLI',
+      geminiCliDesc: 'Import as Gemini CLI configuration',
+    },
   },
 
   // Usage

frontend/src/i18n/locales/zh.ts

@@ -317,6 +317,18 @@ export default {
         note: '请确保配置目录存在。macOS/Linux 用户可运行 mkdir -p ~/.codex 创建目录。',
         noteWindows: '按 Win+R，输入 %userprofile%\\.codex 打开配置目录。如目录不存在，请先手动创建。',
       },
+      antigravity: {
+        description: '为 Antigravity 分组配置 API 访问。请根据您使用的客户端选择对应的配置方式。',
+        claudeCode: 'Claude Code',
+        geminiCli: 'Gemini CLI',
+        claudeNote: '这些环境变量将在当前终端会话中生效。如需永久配置，请将其添加到 ~/.bashrc、~/.zshrc 或相应的配置文件中。',
+        geminiNote: '这些环境变量将在当前终端会话中生效。如需永久配置，请将其添加到 ~/.bashrc、~/.zshrc 或相应的配置文件中。',
+      },
+      gemini: {
+        description: '将以下环境变量添加到您的终端配置文件或直接在终端中运行，以配置 Gemini CLI 访问。',
+        modelComment: '如果你有 Gemini 3 权限可以填：gemini-3-pro-preview',
+        note: '这些环境变量将在当前终端会话中生效。如需永久配置，请将其添加到 ~/.bashrc、~/.zshrc 或相应的配置文件中。',
+      },
     },
     customKeyLabel: '自定义密钥',
     customKeyPlaceholder: '输入自定义密钥（至少16个字符）',
@@ -324,7 +336,15 @@ export default {
     customKeyTooShort: '自定义密钥至少需要16个字符',
     customKeyInvalidChars: '自定义密钥只能包含字母、数字、下划线和连字符',
     customKeyRequired: '请输入自定义密钥',
-    ccSwitchNotInstalled: 'CC-Switch 未安装或协议处理程序未注册。请先安装 CC-Switch 或手动复制 API 密钥。'
+    ccSwitchNotInstalled: 'CC-Switch 未安装或协议处理程序未注册。请先安装 CC-Switch 或手动复制 API 密钥。',
+    ccsClientSelect: {
+      title: '选择客户端',
+      description: '请选择您要导入到 CC-Switch 的客户端类型：',
+      claudeCode: 'Claude Code',
+      claudeCodeDesc: '导入为 Claude Code 配置',
+      geminiCli: 'Gemini CLI',
+      geminiCliDesc: '导入为 Gemini CLI 配置',
+    },
   },
 
   // Usage